Margaretha af Ugglas

Märta Margaretha baroness af Ugglas (; 5 January 1939 – 10 May 2026) was a Swedish Moderate Party politician. She was the sister of Hugo Jr (1933–1976), Elisabeth Silfverstolpe (1935–1985) and Jan Stenbeck (1942–2002). af Ugglas fought a bitter feud with her brother Jan over the family fortune, and subsequently withdrew from her brother and Kinnevik.

Career af Ugglas attended the Harvard-Radcliffe Program in Business Administration from 1960 to 1971 and graduated from the Stockholm School of Economics in 1964 with a degree in business administration and economics (Civilekonom). In 1992, together with an EU Commissioner and nine other ministers of foreign affairs from the Baltic Sea area, she founded the Council of the Baltic Sea States (CBSS) and the EuroFaculty. af Ugglas served as the Chairperson-in-Office of the OSCE from 1992 to 1993. She was vice chairman of the European People's Party from 1996. Boliden AB, Swedish Match AB and Stora Kopparbergs Bergslags AB. She was chairman of the Save the Children's Stockholm Association, the Swedish Women's Voluntary Defence Organization

Personal life In 1966 she married baron Bertil af Ugglas (1934–1977), the son of Commander baron Oscar af Ugglas and Ingeborg (née countess Lewenhaupt).

She died on 10 May 2026, aged 87.

Awards and decorations